Reddit - redditsheep3

<!DOCTYPE html>
<html>
<head>
<script type="text/javascript">
function dispGrade() {
    var alphaResult;
    var value1 = parseInt(document.getElementById("test1").value);
    var value2 = parseInt(document.getElementById("test2").value);
    var value3 = parseInt(document.getElementById("test3").value);
    var sum = document.getElementById("sum");
    var average = document.getElementById("average");
    var alpha = document.getElementById("alpha");
    sum.value = value1 + value2 + value3;
    average.value = (sum.value/3).toFixed(2);
    var gradeResult = Math.floor(parseInt(average.value)/10);
    switch (gradeResult) {
        case 10:
        alphaResult = "A*";
        break;
        case 9:
        alphaResult = "A";
        break;
        case 8:
        alphaResult = "B";
        break;
        case 7:
        alphaResult = "C";
        case 6:
        alphaResult = "D";
        break;
        default:
        alpharesult = "F";
        break;
    }
    alpha.value = alphaResult;
}
</script>
</head>
<body>
<form onsubmit="dispGrade()">
<p><label for="test1">Enter your grade in test 1:</label>
<input type="text" id="test1"></input>
<p><label for="test2">Enter your grade in test 2:</label>
<input type="text" id="test2"></input>
<p><label for="test3">Enter your grade in test 3:</label>
<input type="text" id="test3"></input>
<p><input onclick="dispGrade(); return false;" type="submit" value="Display Computed Grades"></input>
<div>
<p>Sum of your average grades: <input type="text" value="" id="sum" readonly="readonly"></input>
<p>Your average grade: <input type="text" value="" id="average" readonly="readonly"></input>
<p>Your alpha grade: <input type="text" value="" id="alpha" readonly="readonly"></input>
</form>
</body>
</html>